document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=923311>Question 923311</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Construct a 99% confidence interval for a population mean. The sample mean is  X = 40 and the standard error of the mean is &#963;X = 2.4.  <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #559949 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=559949\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> sample mean is X = 40 and the standard error of the mean is &#963;X = 2.4. <BR>\n" );
document.write( " 99% confidence interval for a population mean.<BR>\n" );
document.write( "ME = 2.576(2.4) = 6.2<BR>\n" );
document.write( "CI = 40 - ME < u < 40 + ME<BR>\n" );
document.write( "CI = 40 - 6.2 < u < 40 + 6.2<BR>\n" );
document.write( "CI: (33.8, 46.2)<BR>\n" );
document.write( "Note: As sample mean is a whole number, may wish to round CI to whole numbers:<BR>\n" );
document.write( "CI( 34, 46) </SPAN>\n" );
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